minería
https://www.bazl.admin.ch/bazl/en/home/specialists/flight-operations/spo/spo-for-swiss-operators.html
https://arc.lib.montana.edu/snow-science/item/2466
https://avalancheservices.ca/projects
https://infoscience.epfl.ch/record/223068
https://arc.lib.montana.edu/snow-science/item/2466
https://avalancheservices.ca/projects
https://infoscience.epfl.ch/record/223068